Win7 - Disable ACPI? Try this:

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Win7 - Disable ACPI? Try this:
Posted on: 16.02.2013 by Brunilda Kora
I've been having audio issues with Windows 7, even after some pretty serious optimising.

Nothing really serious - but I knew I could get better performance out of my laptop.

I've tried a lot of different ways to get around the Win 7 ACPI issues, and I knew that ACPI was causing some serious hard page faults from using DPC Checker and LatencyMon.

As a last ditch effort, I thought I'd try removing the battery...

Bugger me if all my ACPI problems didn't just stop!

Try it - see what results you get...
Nedra Fresneda
19.02.2013
Originally Posted by Jester
IMO this is the Number 1 optimisation you can use for windows machines
This, been around at least since XP and solved most of my issues back in the day where there wasn't too much documented info on the subject. Second one would be turning off wifi.
Doreen Schurle
17.02.2013
Originally Posted by Patch
I'm using control vinyl for scratching - so any improvement on latency is welcomed!
In that case, roll your own Windows Embedded Standard 2009 image with the bare essentials
Brunilda Kora
20.02.2013
Black Vipers site is awesome - but I've never done ALL of his tweaks for a bare bones system.

Does anyone know if you can safely use ALL of his tweaks and still run real-time audio software (incl. VST's)?
Karolis Petrauskas
20.02.2013
Yes blackviper! Good call.
Latoria Kavulich
20.02.2013
you can add smitten's tweaks into the list you can modify in gamebooster. also check out black vipers win 7 tweaks here http://www.blackviper.com/2009/10/01...-super-tweaks/
Karolis Petrauskas
19.02.2013
A man on the move!

Also Dropbox FTW.
Len Lukawski
19.02.2013
https://www.dropbox.com/s/i9fez007rs...mizer-BETA.exe

This is a .exe version

It's about a year old. Best I can do from the phone.
Karolis Petrauskas
19.02.2013
Game booster is great and I have used it but I believe with smittten's script my machine runs smoother. The issue with gamebooster is that you sometimes can lose custom settings when it upgrades.
Maile Dekerlegand
19.02.2013
game booster
http://www.iobit.com/gamebooster.html
Karolis Petrauskas
19.02.2013
Have you tried smittten's script? It makes my windows machines run smooth and it's super easy to use. Smitten, do you have a current link handy?
Nedra Fresneda
19.02.2013
Bastards. It was nice to keep the battery in case of a power cut.
Brunilda Kora
19.02.2013
been around at least since XP
And made a hasty exit at Win 7!
Nedra Fresneda
19.02.2013
Originally Posted by Jester
IMO this is the Number 1 optimisation you can use for windows machines
This, been around at least since XP and solved most of my issues back in the day where there wasn't too much documented info on the subject. Second one would be turning off wifi.
Brunilda Kora
17.02.2013
I have to admit, mate... I don't even know what that is!
Doreen Schurle
17.02.2013
Originally Posted by Patch
I'm using control vinyl for scratching - so any improvement on latency is welcomed!
In that case, roll your own Windows Embedded Standard 2009 image with the bare essentials
Brunilda Kora
17.02.2013
I'm using control vinyl for scratching - so any improvement on latency is welcomed!
Doreen Schurle
17.02.2013
I can confirm this; things changed significantly with NT6.0 with regards to the HAL, it's essentially an all-in-one solution which automatically detects and enables features. One of its prerequisites is, as you said, ACPI.

The thing is, I can't imagine why having ACPI support would significantly impact your latency. In fact, I've had a look over on the NI community s where people seem to be going mental about this, but we're talking about fractions of miliseconds here; I've quite happily got my Reloop Contours at ~5ms on Windows 8, and I haven't even remotely TRIED to optimize anything. Plus, the distance between the speakers and your audience adds 1ms per foot anyway...
Brunilda Kora
17.02.2013
Maybe it's a Vaio thing - but I couldn't even disable the ACPI on my machine. And I've done LOTS of searching on t'interweb...

From Microsoft Answers:

Originally Posted by Question
How to disable ACPI in Windows 7 64-bit version?
Hello,
I am using ASUS P6T SE motherboard running Windows 7 64-bit operating system. When I try to disable the ACPI the computer shuts down and restarts by it self. I have not seen the windows come-up. Any suggestion on how to disable ACPI? Since I have a PCIe card that works good on windows XP and windows 7 32-bit version with ACPI disable. I would like to do the same on Windows 7. Any suggestions or ideas on what make PCIe to work when I disable the ACPI on windows XP and Windoes 7 32-bit
Thanks in Advance
Originally Posted by Answer
You can't disable ACPI in Windows 7. It is required. There is no NON-ACPI HAL.
On all my other laptops - disabling ACPI was the first tweak I'd perform...
Maile Dekerlegand
17.02.2013
agree, disable the battery controller method driver, is for me also the best win7/PC latency optimisation

haven't had to actually remove the battery,

second best the wireless driver and then nvidea gfx driver

after that using a win service disabling optimisation script from a freeware tool game...blocker.runner or something (name escapes me for the moment...)

i guess removing the battery would by default disable the control method driver, but its a pretty big risk to have your lappy switch off if you bump the cable...
Len Lukawski
16.02.2013
Changing the default system font to Tahoma is pretty much THE best thing you can do.
Doreen Schurle
16.02.2013
Originally Posted by Jester
this and not checking your facebook mid set.
Indeed, that's what your phone is for.
Latoria Kavulich
16.02.2013
this and not checking your facebook mid set.
Kristofer Krauel
16.02.2013
Agree. Disabling battery manager was the most effective optimisation step I could take on my windows machine.
Latoria Kavulich
16.02.2013
IMO this is the Number 1 optimisation you can use for windows machines. using the dpc checker before and after this will make it obvious.
Cole Maroto
16.02.2013
Originally Posted by Jester
You can remove the battery. Easier just to disable ACPI Compliant Control Method Battery in the device manager.
Originally Posted by Patch
Doesn't do THING IN wIN 7...
for me disabling acpi in the device manager fixed all of my dcp latency issues. odd it doesn't do anything for you. some have recommended disabling in bios.
Doreen Schurle
16.02.2013
Theoretically you could re-install with a non-ACPI HAL, but it seems like overkill considering there's probably a far simpler solution to your issue.
Brunilda Kora
16.02.2013
Doesn't do THING IN wIN 7...
Latoria Kavulich
16.02.2013
You can remove the battery. Easier just to disable ACPI Compliant Control Method Battery in the device manager.

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